Vending kit and method

ABSTRACT

One variation of a method for controlling access to products from a vending machine includes: locking a door of the vending machine; recording an initial inventory of products arranged within the vending machine based on signals received by a radio antenna arranged within the vending machine and read by a radio frequency identification reader; initiating a transaction in response to receiving a cashless payment mechanism from a patron; unlocking the door in response to authentication of the cashless payment mechanism; in response to closure of the door, recording a final inventory of products within the vending machine based on signals received by the radio antenna and read by the radio frequency identification reader; and initiating a payment with the cashless payment mechanism for a difference between the initial inventory and the final inventory to complete the transaction.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation application of U.S. patentapplication Ser. No. 14/201,369, filed on 7 Mar. 2014, which claims thebenefit of U.S. Provisional Application No. 61/779,402, filed on 13 Mar.2013, U.S. Provisional Application No. 61/779,818, filed on 13 Mar.2013, and U.S. Provisional Application No. 61/906,333, filed on 19 Nov.2013, all of which are incorporated herein in their entireties by thisreference.

TECHNICAL FIELD

This invention relates generally to the field of vending machines, andmore specifically to a new and useful vending kit for vending product inthe field of vending machines.

BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a schematic representation of a vending kit of one embodimentof the invention;

FIG. 2 is a schematic representation of one variation of the vendingkit;

FIG. 3 is a flowchart representation of a method of one embodiment ofthe invention;

FIG. 4 is a flowchart representation of one variation of the method;

FIGS. 5A and 5B are a schematic representations of one variation of thevending kit; and

FIG. 6 is a schematic representation of one variation of the vendingkit.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

The following description of embodiments of the invention is notintended to limit the invention to these embodiments, but rather toenable any person skilled in the art to make and use this invention.

1. Vending Kit

As shown in FIG. 1, a vending kit 100 for controlling access to productsfrom a vending machine 102 includes: a locking mechanism 112 to beinstalled between a door of a kiosk and a casing of the kiosk; a doorsensor 110; a housing 120 to be installed onto an external surface ofthe kiosk; a display 130 arranged within the housing 120 displayingpricing information for products within the kiosk; a payment collectionmodule 140 coupled to the vending machine 102; a radio antenna 150 to beinstalled within the kiosk and to broadcast a signal toward radiofrequency identification tags arranged on products within the kiosk; aradio frequency identification reader 160 arranged within the housing120 and reading signals received from radio frequency identificationtags via the radio antenna 150; and a processor 170 arranged within thehousing 120, recording an initial inventory of products within the kioskbased on signals read by the radio frequency identification reader 160,authenticating a cashless payment mechanism received at the paymentcollection module 140, triggering the locking mechanism 112 to unlockthe door in response to authentication of the cashless paymentmechanism, recording a final inventory of products within the kioskbased on signals read by the radio frequency identification reader 160in response to closure of the door detected at the door sensor 110, andinitiating a payment with the cashless payment mechanism for adifference between the initial inventory and the final inventory.

As shown in FIGS. 3 and 5A, one variation of the vending kit 100includes: a locking mechanism 112 installed between a door of the kioskand a casing of the kiosk; a door sensor 110 detecting a state of thedoor; a radio antenna 150 broadcasting a signal toward radio frequencyidentification tags arranged on products within the kiosk; a radiofrequency identification reader 160 and reading identification signalsreceived from radio frequency identification tags via the radio antenna150; a wireless communication module 142 and transmitting product datato a mobile computing device proximal the kiosk for presentation to apatron; and a processor 170 recording an initial inventory of productswithin the kiosk based on signals read by the radio frequencyidentification reader 160, initiating, through the wirelesscommunication module, a transaction with a cashless payment mechanismassociated with the mobile computing device, triggering the lockingmechanism 112 to unlock the locking mechanism 112 in response toinitiation of the transaction, recording a final inventory of productswithin the kiosk based on signals read by the radio frequencyidentification reader 160 in response to closure of the door detected atthe door sensor 110, and initiating a payment with the cashless paymentmechanism for a difference between the initial inventory and the finalinventory.

The vending kit 100 enables vending of one or more products of varioussizes, types, form factors, etc. from a vending machine 102 within asingle transaction without requiring specialized dispensary modules,mechanisms, or vending machines. Generally, the vending kit 100 can beinstalled on or within an existing vending machine 102, refrigeratorvessel (e.g., a refrigerator), food kiosk, enclosed pantry, etc.(hereinafter a “kiosk”) to transform the container into a ‘smart’vending machine 102 through which a patron may provide a billingmechanism, remove any number of foodstuffs or other items, and be billedautomatically for what was removed without further input. In particular,the vending kit 100 can be installed on or in a container that includesone or more open shelves upon which various products (i.e., foodstuffs)can be placed, the products each including a tag wirelessly detectableby the vending kit 100 to check inventory within the container. Thevending kit 100 also controls access to products within the container bysetting a state of a door lock on the container and then handlescompensation for foodstuffs selected by a patron by initiating paymentfor the foodstuffs with a cashless payment mechanism entered by thepatron when the door of the container transitions from an openstate—during which products are removed from the container—to a closedstate.

In one implementation shown in FIG. 1, components of the vending kit100—such as the locking mechanism 112, the door sensor 110, the housing120, the display 130, the payment collection module 140, the radioantenna 150, the radio frequency identification (RFID) reader, and theprocessor 170—are bundled into a kit to retrofit onto an existingshelving unit, display case, refrigerator, or other product storage unitincluding a shelf and door. For example, the kit can be installed on anexisting refrigerator to repurpose the refrigerator as a vending machine102 through which patrons can retrieve food items from the refrigeratorand pay for their selections accordingly. In this example, the doorsensor 110, the display 130, the payment collection module 140, theradio frequency identification (RFID) reader, and the processor 170 canbe integrated into the housing 120, and the housing 120 can be installedonto an exterior surface of the refrigerator (e.g., on an outer surfaceof the door of the refrigerator), the locking mechanism 112 can beinstalled between the door and the door frame of the refrigerator, andthe radio antenna 150 can be installed over a shelf within therefrigerator. The components of the vending kit 100 can thus beinstalled on the exterior of the vending machine 102 and/or inside ofthe vending machine 102, such as within a food storage area of thevending machine 102. For example, the housing 120 can be installed on aninterior surface of a transparent (e.g., glass) area of the door of thevending machine 102 with the display 130 displaying images through thedoor, and a lock receiver of the locking mechanism 112 can be installedon an adjacent interior wall of the vending machine 102.

In a similar implementation shown in FIG. 5A, the locking mechanism 112,the door sensor 110, the display 130, the payment collection module 140,the radio antenna 150, the radio frequency identification (RFID) reader,and the processor 170 of the vending kit 100 are integrated into areplacement door 122 for an existing refrigerator. Thus, in thisimplementation, the replacement door 122 can be installed in unit ontothe existing refrigerator to upgrade the refrigerator with thefunctionalities described herein.

In yet another implementation shown in FIG. 3, the vending kit 100 isintegrated into a refrigerated container as an original-equipmentmanufacture (OEM) vending machine 102 exhibiting the functionalitiesdescribed herein. However, the vending kit 100 can be installed onto orintegrated into a container in any other way to enable any of thevending functionalities described herein. Hereinafter, unless stated orimplied otherwise, “vending machine 102” shall refer to the assembly ofa container—such as a refrigerator—with the vending kit 100 installed.

In these implementation, components of the vending kit 100 can bediscrete and assembled into the vending kit 100, such as with theprocessor 170, the display 130, the RFID reader 160, and the paymentcollection module 140 arranged within the housing 120 and with the RFIDantenna connected to the RFID reader 160 by a coaxial cable.Additionally or alternatively, components of the vending kit 100 can bepre-packaged as a mobile computing device, such as a tablet or asmartphone that includes a wireless communication module, a camera 192,the processor 170, and the display 130 and that is connected to thepayment collection module 140 and to the RFID reader 160 via wiredconnections.

The vending kit 100 can vend one or more types or categories ofproducts, such as fresh food, prepackaged food, fresh or prepackageddrinks, peripheral electronic devices, jewelry items, clothing, shoes,janitorial items, etc.

2. Applications

In one application, the vending kit 100 is installed into a food-vendingkiosk (i.e., assembled into “vending machine 102”) stocked withfreshly-prepared food items from local café s and restaurants. In thisapplication, boxed salads in various sizes, boxed or wrapped sandwichesand burritos, boxed or bottled drinks, and/or condiments, etc. can allbe stacked or otherwise arranged on one or more open shelves within thevending machine 102. For example, a patron can swipe a credit cardthrough a credit card reader coupled to the processor 170 or log into apurchase account via the display 130 that includes a touchscreen, andthe processor 170 can trigger the locking mechanism 112 to unlock thedoor in response to validation of the credit card or successful logininto a purchase account. The patron can subsequently open the door ofthe vending machine 102, select one or more food items, and close thedoor. Once the door is closed, the RFID reader 160 can poll RFID tagsstill within the vending machine 102, and the processor 170 can comparea new set of returned tag values (i.e., a current) inventory to aprevious set of returned tag values (i.e., a previous) inventory toidentify one or more food items removed from the shelf. The processor170 can thus initiate a single transaction to bill the patron's paymentmechanism for all removed items. Thus, in this application, the vendingmachine 102 can be arranged in an office as an alternative to anon-campus cafeteria or an off-campus restaurant, outside a café as analternative to waiting in line for a sandwich, or in any other settingto supply food to local patrons on the fly.

In another application, the vending kit 100 is installed into an officesupply-vending kiosk stocked with computer mice, keyboards, pens,pencils, reams of paper, boxes of staples, phone charges, computerchargers, and/or sticky notes, etc. on one or more open shelves. Likethe application described above, products can be stacked onto one ormore shelves without guides or specialized dispensing mechanisms withinthe vending machine 102. Rather, the processor 170 can trigger thelocking mechanism 112 to unlock the door once a patron is identifiedand/or a payment method is provided, identify inventory changes on theshelves based on poll results collected at the RFID reader 160regardless of product placement or arrangement within the vendingmachine 102, and bill the patron according to items identified asremoved from the vending machine 102 once the door is closed (or onceanother transaction-completion event is detected). Additionally oralternatively, the vending machine 102 can authenticate or identify thepatron, enable the patron to take and/or return stocked items, andupdate an inventory ledger accordingly.

In yet another application, the vending machine 102 is stocked withpaper newspapers for purchase, paper novels or other printed literaturefor purchase, CDs or DVDs for rent or purchase, or prepackaged foods(e.g., chips, canned drinks). The vending machine 102 can also bestocked with mixed media, such as both food and books, which can bearranged on the same or different shelves within the vending machine102. The vending machine 102 can also be installed in an officeenvironment, an unrelated retail outlet, a grocery store, a café orrestaurant, or an airport. However, the vending machine 102 can bearranged or installed in any other suitable environment and stocked withany other suitable product, media, or consumable for rent or purchase.

3. Kiosk

As described above, the vending kit 100 can be installed onto anexisting kiosk or integrated into a new kiosk enclosing one or moreshelves behind a door. The kiosk can be a freestanding (e.g., floor)kiosk, an installed unit (shown in FIG. 1), a tabletop unit,wall-hanging unit, or of any other form arranged in a space in any otherway. The door of the kiosk can include a transparent window to enable apatron proximal the vending machine 102 (i.e., the kiosk with installedvending kit 100) to visually discern items within the vending machine102, as shown in FIG. 1. For example, the door can be a double-panedsafety-glass door that is vertically hinged to the body of the kiosk onone side, and the door can include a handle on an opposite side of thedoor.

The kiosk can be sized for one or more open shelves that hold product ofa maximum height and/or width dimension. For example, the kiosk cansupport open shelves spaced vertically by twelve inches, thus enabling a20 oz. soda bottle to be stored on a lower shelf of the kiosk and thencomfortably removed by a patron. The kiosk can be insulated and heatedand/or cooled to enable safekeeping of perishable food items. Forexample, the kiosk can include two open shelves separated by aninsulated barrier, wherein one shelf is heated to maintain hotfoodstuffs (e.g., soup, burritos) at a target hot consumptiontemperature, and the second shelf can be cooled to maintain coldfoodstuffs (e.g., fruit, cold sandwiches) at a target cold consumptiontemperature.

The shelf of the kiosk can define an open structure that supportsproducts of various form factors. In one implementation, the shelfdefines a flat shelf without partitions permanently or transientlyarranged within the interior of the kiosk. In this implementation, theshelf can thus simultaneously support multiple items of different (orunique) sizes, forms, or packaging and enable quick exchange of items ofdifferent form factors without necessitating reconfiguration ofpartitions within the kiosk. For example, the shelf can omit acoil-based dispenser commonly used to dispense candy bars in a kiosk,and instead, on one day, a box of candy bars can be placed on one sideof the shelf adjacent a stack of fresh salads and bowls of fresh fruitin compostable containers, and the box of candy bars can be moved to another side of the shelf to make room for a box of single-serving yogurtcups on the next day.

In another implementation, the shelf is assigned to an item of commontype or packaging, such as soda in standard 12 oz. aluminum cans, andthe shelf includes one or more guides to aid placement of items into thevending machine 102. In one example, the shelf includes decals orlighted regions demarcating preferred placement of soda cans on theshelf. In another example, the kiosk includes shallow cups or ridgesthat fit the bottom of soda cans, wherein the cups physically retaincans in an organized fashion on the shelf. As in the foregoing examples,the shelf can similarly define visual and/or physical guides to aidorganization of single-serving yogurt cups, cups of coffee, or cups ofsoup on the shelf. In this implementation, the shelf can still supportitems loaded into the vending machine 102 without deference to visualindicators applied to the shelf as well as items placed on, over, and/oraround physical guides. Therefore, in this implementation, the shelf canprovide moderate physical or visual guidance to loading product (i.e.,foodstuffs) onto the vending machine 102.

In the foregoing implementation in which the shelf includes features toguide placement of items of known size, shape, and/or packaging, thevending kit 100 can further include a sensor arranged on or within theshelf to detect placement and/or removal an item from the shelf. In oneexample implementation, the vending kit 100 includes a RFID tag arrangedon the shelf adjacent a region of the shelf allocated for an item withmetallic packaging, such as an aluminum soda can or a burrito wrapped inaluminum foil. In this example implementation, the radio antenna 150 andthe RFID reader 160 can cooperate to determine that a correspondingproduct has been placed on a designated area of the shelf when the RFIDreader 160 does not detect a corresponding RFID tag—that is, when themetallic packaging placed on the shelf blocks wireless communicationbetween the radio antenna 150 and the RFID tag. In this exampleimplementation, the processor 170 can thus determine that thecorresponding product has been removed from the shelf when the radioantenna 150 and the RFID reader 160 can again detect the RFID tag, sinceremoval of the item may enable a signal from the radio antenna 150 toreach the RFID tag and a signal thus transmitted by the RFID tag maythus reach the radio antenna iso. In this implementation, an RFID tagcan be similarly applied to a shelf or other area within the vendingmachine 102 such that a product—even without metallic packaging—shieldsa corresponding RFID tag. For example, a (plastic) bottle of water canbe arranged on a shelf within the vending machine 102 and between theradio antenna 150 and the RFID tag such that water in the bottle shieldsthe RFID tag from a signal transmitted from the radio antenna.

The vending kit 100 can additionally or alternatively include acapacitive or optical proximity sensor arranged on or in a particularregion of the shelf allocated for an item, and the processor 170 canpoll the proximity sensor to determine if an item is arranged in theparticular region. Similarly, the vending kit 100 can include a cameraor other optical sensor that images all or a portion of the shelf, andthe processor 170 can implement machine vision and/or machine learningtechniques to identify items placed on and/or removed from the shelf. Inthis implementation, the camera or optical sensor can be coupled to aninterior surface of the kiosk or arranged within the housing 120 anddefine a field of view that includes at least a portion of the shelf.

The shelf can also be adjustable within the kiosk, thereby enablingmanual redistribution of product holding areas with the vending machine102. For example, a supplier may occasionally place larger and/oroddly-shaped items within the vending machine 102 by moving the shelf.However, the shelf can be arranged in the kiosk (or vending machine 102)in any other way and can include any other suitable feature orcomponent.

4. Housing

The housing 120 of the vending kit 100 is configured for installation onan external surface of the kiosk. Generally, the housing 120 functionsto contain various components of the vending kit 100—such as theprocessor 170, the display 130, the RFID reader 160, and/or the paymentcollection module 140—and to retrofit onto an external surface of acasing of the kiosk (e.g., a refrigerator). For example, as in theapplication of the vending kit 100 as an aftermarket upgrade for anexisting refrigerator described above, the housing 120 can be installedover an external surface of a door of the refrigerator with atamperproof fastener. Similarly, as in the application of the vendingkit 100 as a replacement door 122 for an existing refrigerator describedabove, the housing 120 can include a replacement door 122 for therefrigerator. Thus, when the vending kit 100 is in operation, thehousing 120 is installed onto the kiosk to define a (‘smart’) vendingmachine 102.

In one implementation of the vending kit 100 as an aftermarket upgradekit, the housing 120 contains the radio antenna 150, the RFID reader160, the processor 170, and the display 130 (e.g., a touchscreen),and/or the payment collection module 140, etc., and the housing 120defines a set of mounting locations (e.g., through-holes) that accepttamper-proof self-tapping sheet metal screws to mount the housing 120over a surface of the kiosk, such as over a corner of a door of thekiosk opposite a hinged side of the door of the kiosk. Alternatively,the housing 120 can be substantially permanently (i.e., non-transiently)installed on the kiosk, such as with an adhesive (e.g., epoxy) or otheradhesive or chemical fastener.

In another implementation, the housing 120 includes a mounting platethat is first installed on a side of the kiosk, such as with any of theforegoing methods or fasteners, and the housing 120 is then installedover the mounting plate. In this implementation, the mounting plate caninclude electrical pin contacts electrically coupled to various othercomponents and power sources within the vending machine 102. Forexample, the radio antenna 150 can be electrically coupled to aconnector at the mounting plate, the locking mechanism 112 can beelectrically coupled to a power control pin at the mounting plate, andan electrical power tap connected to a regulated power line within thekiosk can be electrically coupled to ground and power source pins at themounting plate. Thus, in this example, when the housing 120 is installedover the mounting plate, the pins on the housing 120 electricallycoupled to the processor 170, to the RFID reader 160, etc. can contactthe foregoing pins in the mounting plate to collect RFID signals throughthe radio antenna 150, to control the locking mechanism 112, and tosource power for the vending kit 100, respectively. The housing 120 canfurther lock to the mounting plate, such as with a mechanical lock withkey, to prevent tampering of fasteners that retain the mounting plate tothe kiosk and that lie behind the installed housing.

In the application of the vending kit 100 that is installed overexisting product storage containers, the vending kit 100 can be alsoreconfigurable for installation on both refrigerators with left-hingingdoors and refrigerators with right-hinging doors. For example, thelocking mechanism 112 can be configured for installation on a door of arefrigerator, and the housing 120 of the vending kit 100 can beconfigured for installation on an exterior casing of the refrigeratoradjacent the door such that the housing 120 (with the display 130 andother components of the vending kit 100) is flipped vertically betweenleft-hinging installations (shown in FIG. 5B) and right-hinginginstallations (shown in FIG. 5A). In this example, the vending kit 100can also include a tilt sensor that detects the orientation of thehousing 120 (and therefore the configuration of the refrigerator) oncethe vending kit 100 is installed and powered ON. The processor 170 canthus control the display 130 to render customer prompts, billinginformation, item pricing, real-time discounts, current inventory, etc.in a legible orientation based on the detected orientation of theinstalled housing.

The processor 170 can similarly implement the detected orientation ofthe installed housing and/or positions of the radio antenna 150 retrofitinto the refrigerator to determine positions of food items within thevending machine 102 based on RFID signal strengths received by the RFIDreader 160. For example, the processor 170 can determine that thevending machine 102 is in a first vertical orientation based on anoutput of an accelerometer within the housing 120, correlate this firstvertical orientation with installation on the right side of a vendingmachine 102 door (i.e., on a left-hinging door), and thus determine thatdetected food items to the left rear of the housing 120 are inside ofthe vending machine 102 and that detected food items to the right rearof the housing 120 are outside of the vending machine 102. In thisexample, a processor in another vending kit 100 installed on a similarrefrigerator can determine that its housing is in a second verticalorientation (180° from the first vertical orientation), correlate thissecond vertical orientation with installation on the left side of therefrigerator door (i.e., a right-hinging door), and thus determine thatdetected food items to the right rear of the housing 120 are inside ofthe vending machine 102 and that detected food items to the left rear ofthe housing 120 are outside of the vending machine 102. However, thevending kit 100 can function in any other way to detect a position ofthe installed vending kit 100 and implement the detected position in anyother way.

Furthermore, because refrigerators, storage kiosks, and otherpreexisting containers can be of various shapes and sizes, the housing120 can be configured for installation onto various positions onexisting product storage containers, such as at various heights along aleft side of a tall (e.g., six-foot-tall) refrigerator with aright-hinged door, at a top-right corner of a low (e.g., four-foot-tall)refrigerator with a left-hinged door, or near a top-center of arefrigerator with double (e.g., French) hinged doors.

Patrons can also be of various heights. Therefore, as shown in FIG. 6,one variation of the vending kit 100 further includes an actuator 124that modifies a position or orientation of the housing 120 to improvecustomer access to the display 130 (or to the touchscreen). For example,the processor 170 can implement eye-tracking techniques to analyzeframes of a video feed from a forward facing camera 192 adjacent thedisplay 130 and thus determine a preferred position of the housing 120to enable visual (and tactile) access to the display 130 (or thetouchscreen) by current patron. The processor 170 can then output acorresponding position command to the actuator 124, and the actuator 124can implement the position command to move the housing 120 and/or thedisplay 130. In one implementation, the actuator 124 moves the display130 (e.g., the processor 170 along a vertical track to bring the centerof a display area of the display 130 in-line with the patron's eyes (atleast within a throw of the actuator 124), as shown in FIG. 6. Theactuator 124 can additionally or alternatively tilt the display 130 toreduce the customer's viewing angle to the display 130—that is an anglebetween the line of sight from the customer's eyes to the center of thedisplay 130 and a normal vector of the surface of the display 130).However, the processor 170 can determine a preferred position of thedisplay 130 in any other way, and the actuator 124 can function in anyother way to adjust the position of the display 130 accordingly.

5. Locking Mechanism

The locking mechanism 112 of the vending kit 100 is configured forinstallation between a door of a kiosk and a casing of the kiosk. Thus,wherein the vending kit 100 is in operation, the locking mechanism 112is coupled to the housing 120 and installed between the door of thekiosk and the casing of the kiosk. Generally, the locking mechanism 112functions to control access to products inside the vending machine 102by intermittently locking and unlocking the door based on a controlsignal from the processor 170.

In one implementation, the locking mechanism 112 includes anelectromagnetic lock. In this implementation, the locking mechanism 112includes an armature plate configured for mechanical installation onto acase of the kiosk (e.g., a refrigerator). In this implementation, thelocking mechanism 112 also includes an electromagnet configured formechanical installation onto the door of the kiosk, to retain thearmature plate in a steady-state mode, and to release the armature platein response to receiving an unlock command from the processor 170. Thus,in this implementation, the processor 170 can trigger a relay to supplycurrent to the electromagnet to induce a magnetic field that draws thearmature plate toward the electromagnet and then retains the armatureplate against electromagnet. Alternatively, the armature plate can becoupled to the door, and the electromagnet can be coupled to the case ofthe kiosk. The locking mechanism 112 can include any other suitable typeof electromagnetic lock arranged in any other suitable way.

The locking mechanism 112 can alternatively include an electromechanicallock, such as solenoid-type lock, and the processor 170 can controlaccess to the interior space of the vending machine 102 by transmittingsignals to the electromechanical lock to lock and/or unlock the door.For example, the locking mechanism 112 can include a lock bolt and areceiver, receiver mounted inside the case of the kiosk, and the lockbolt mounted on an interior face of the door and driven into thereceiver by a solenoid controlled by the processor 170. In a similarexample, the receiver can be mounted to an exterior surface of the kioskcase, and the lock bolt and solenoid can be arranged within the housing120 with the solenoid driving the lock bolt out of the housing 120 andinto the receiver to lock the door in response to a signal from theprocessor 170. In another similar example in which the housing 120defines a replacement door 122 for the kiosk, the locking mechanism 112can include a lock bolt integrated into the replacement door 122 and areceiver configured for mounting on the kiosk case in alignment with thelock bolt.

Yet alternatively, the locking mechanism 112 can directly engage anexisting feature on the door, a doorframe, or an other feature on thekiosk, such as instead of a lock receiver or armature plate.

Similar methods and fasteners described above to install the housing 120onto the kiosk can be implemented to install components of the lockingmechanism 112 onto the door and/or onto the case of the kiosk. Forexample, the locking mechanism 112 can be installed with bolts, standardor tamper-proof screws, or any other suitable mechanical fastener. Thelocking mechanism 112 can also include a tamper-proof or lockable coverover one or more mechanical fasteners to prevent access thereto and thusdeter removal of the lock mechanism by other than an authorized user(e.g., a technician).

6. Door Sensor

The door sensor 110 of the vending kit 100 detects a state of the doorof the vending machine 102. Thus, when the vending kit 100 is inoperation, the door sensor 110 detects a state of the door—such as ifthe door is open, closed, closed and unlocked, and/or closed andlocked—and communicates the door state and/or a change in door state tothe processor 170.

The door sensor no can include an electromechanical contact switch, anoptical sensor, a capacitive sensor, a magnetic (e.g., Hall effect)sensor, an angle sensor (e.g., arranged on a door hinge), a reed switch,or an other suitable type of sensor that detects a state of the door.

In one implementation, the door sensor no and the locking mechanism 112are physically coextensive. For example, the door sensor 110 can beintegrated into the electromagnetic lock, detect a change in magneticflux at the electromagnet corresponding to transition of the door fromthe open state to a closed state, and then communicate the detected doorchange state to the processor 170. The door sensor no can similarlydetect proximity of the armature plate to the electromagnet and transmitthis detected proximity—such as in analog distance form or in binary(e.g., open or closed) form—to the processor 170. Alternatively, thedoor sensor no can include a magnetic bond sensor that detects thatoutputs a signal corresponding to whether or not the locking mechanismis locked.

However, the door sensor no can be any other suitable type of sensor,can be arranged in any other suitable way, and can function in any otherway to detect a state of the door.

7. Radio Antenna and RFID Reader

The radio antenna 150 of the vending kit 100 is configured forinstallation within the kiosk and to broadcast a power signal towardradio frequency identification tags arranged on products within thekiosk. Thus, when the vending kit 100 is in operation, the radio antenna150 broadcasts a signal toward radio frequency identification tagsarranged on products within the kiosk. The radio frequencyidentification reader 160 of the vending kit 100 can be arranged withinthe housing 120 and reads signals received from radio frequencyidentification tags via the radio antenna 150. Thus, when the vendingkit 100 is in operation, the radio frequency identification reader 160reads (e.g., processes) signals received—via the radio antenna 150—fromradio frequency identification tags arranged on products within thevending machine 102.

Generally, the RFID reader 160 and the radio antenna 150 cooperate toretrieve data from a radio frequency identification tag coupled topackaging of a product arranged within the vending machine 102. Inparticular, the RFID reader 160 transmits a signal to the radio antenna150, which wirelessly broadcasts this signal in the form ofelectromagnetic radiation to the interior volume of the vending machine102. RFID tags arranged on products within the vending machine 102harvest power from this electromagnetic radiation and broadcast uniquecodes. The radio antenna 150 wirelessly receives (all or a portion of)these unique codes, which are collected and read (i.e., converted into amachine-readable format) by the RFID reader 160. The processor 170 canthen receive the unique codes received from the RFID tags and convertedby the RFID reader 160 to inventory products within the vending machine102.

Therefore, each item placed in the vending machine 102 can be physicallylabeled with a RFID tag, as shown in FIG. 2. In particular, a RFID tagarranged on an item can output a substantially unique signal whenpowered, such as a unique serial number or a common product type IDfollowed by a unique serial number. In one example, a RFID tag appliedto the packaging of a first fresh burrito can output the numericalsequence “10027-000857,” wherein “10027” is a stock-keeping unit (SKU)number assigned to a veggie burrito with medium salsa from a particularvendor, and wherein “000857” is a unique serial number assigned to theparticular RFID tag. In this example, the kiosk can thus discern betweena first fresh burrito and a similar fresh burrito (e.g., with RFID tagthat outputs “10027-0010791”) in the vending machine 102 based on uniqueserial numbers assigned to respective RFID tags.

Details of a particular item can be previously assigned to acorresponding RFID tag and stored in a database for subsequent access bythe processor 170, such as when the particular item is placed in thevending machine 102 and later removed during a transaction with apatron. As in the example above in which the RFID tag outputs both acommon product ID and a unique serial number and as shown in FIG. 3, thecommon product ID can be linked to a product description (e.g., “veggieburrito from Antonio's Tacos, medium salsa”), an initial or currentprice product (e.g., $7.50), a product shelf life (e.g., twenty-fourhours), nutritional content of the product (e.g., calories,carbohydrates), product ingredients (e.g., flour tortilla, black beans,rice, etc.), potential food allergens (e.g., “This product containsgluten,” “This product may contain traces of peanuts”), etc.

In another example, when a user loads an item into the kiosk, theindividual can interface with the processor 170 (e.g., via the display130 or touchscreen) to select details of the item from a menu ofavailable item details or to manually enter item details. In thisexample, the user can then interface with the radio antenna 150 and theRFID reader 160 to scan a RFID tag—coded with a unique numerical output(e.g., serial number)—on the item packaging to associate the uniquenumerical output with the selected or entered details of the item. Theprocessor 170 can then store the selected or entered product details ina current inventory database with the unique output of the RFID tag. Inyet another example, a RFID tag can be directly coded with item details,and the radio antenna 150 and the RFID reader 160 can cooperate todownload a price, ingredients, and/or nutritional content etc. of anitem directly from the RFID tag arranged on the item. However, an RFIDtag can be linked to and/or store data pertaining to a particular itemin any other suitable way.

In one implementation, a RFID tag is assembled into a tamper-proofsticker that is subsequently applied (e.g., manually) to packaging on anitem prior to placement on the shelf in the kiosk. In thisimplementation, the sticker can self-destruct (e.g., tear) if removalfrom the product packaging is attempted, thus deterring thefts bypreventing a patron from selecting a product, removing the RFID tag fromthe product packing, and returning the RFID tag to the shelf without thecorresponding product. In this implementation, the sticker also be usedto tape packaging around the item closed such that the item cannot beremoved from the packaging without destroying the RFID tag, therebydeterring a patron from returning the RFID tag and the packaging to thevending machine 102 to avoid payment for the item.

Alternatively, the RFID tag can be arranged in a multi-use sticker thatcan be removed and applied to multiple product packages over time, thusenabling reuse and recycling of the RFID tag. For example, the RFID tagcan be arranged in an electrostatic sticker that can me removed from oneused packaging and replaced onto a new packaging.

In another implementation, the RFID tag is incorporated directly intoproduct packaging, such as integrated into a hinged plastic single-usefood container or integrated into a paper sandwich bag. The RFID tag canalso be incorporated into a rubber band, a tie, a bow, a ribbon, tape,or an other fastener that holds packaging around a product.

The RFID tag can also be configured for particular arrangement onproduct packaging such that the radio antenna 150 can read the RFID tagwhen the product is loaded into the vending machine 102, such asregardless of orientation of the product and of other products adjacentthe product on the shelf. For example, the RFID tag can be integratedinto a molded clamp or sticker that holds a disposable clamshell foodbox closed such that the RFID tag can only be arranged on a side of theproduct packaging and not against the shelf when stored in the vendingmachine 102. Furthermore, in this example, communications between theRFID tag and the radio antenna 150 can remain substantially unobstructedwhen similar product packages are stacked on top of and/or adjacent theproduct. However, the RFID tag can be of any other form and can coupleto an item or item packaging in any other suitable way.

The radio antenna 150 can detect (i.e., to power and then receive awireless signal from) multiple RFID tags arranged on corresponding itemsplaced on one or more shelves within the vending machine 102. In oneconfiguration, the radio antenna 150 is arranged on or over the shelf.For example, the radio antenna 150 can be suspended from (the center of)a second shelf above and configured to poll RFID tags on items arrangedon the shelf below. In this example, the radio antenna 150 can include aright-hand circular polarized (RHCP) panel antenna that transmits andreceives signals in the 902-928 MHz frequency band. Alternatively, theradio antenna 150 can be arranged on or coupled to the door. Forexample, in the variation of the vending kit 100 described above inwhich the housing 120 defines a replacement door 122 for the kiosk, theradio antenna 150 can include a dipole antenna suspended from aninterior surface of the replacement door 122 (e.g., on a frame of thereplacement door 122) and substantially aligned (e.g., pointing toward)a particular shelf within the kiosk, such as shown in FIG. 5A.Similarly, the radio antenna 150 can mount onto an OEM door of thekiosk.

In the variation of the kiosk that includes multiple open shelves, thevending kit 100 can include multiple radio antennas, wherein each radioantenna is arranged on or adjacent one shelf of the vending machine 102such as shown in FIG. 5B. For example, each shelf can be a metal (e.g.,aluminum, stainless steel) shelf that blocks an electromagnetic powersignal broadcast from other radio antenna(s) not arranged on, adjacent,or directly over the shelf. (Alternatively, the vending kit 100 caninclude metallic sheaths or films that can be arranged over shelveswithin the kiosk to shield electromagnetic radiation leaked betweenshelves.) Thus, in this example, one radio antenna can be arranged on,adjacent, or over a particular shelf to poll RFID tags on productsarranged on the particular shelf. In this implementation, the vendingkit 100 can thus include multiple radio antennas, with one or more radioantennas polling RFID tags on one particular shelf in the set of shelveswithin the vending machine 102. The RFID reader 160 can thus read RFIDsignals (i.e., RFID tag identification packets) received throughmultiple radio antennas. Alternatively, the vending kit 100 can includemultiple RFID readers that similarly function to read wireless signalsreceived from RFID tags through corresponding radio antenna(s).

The radio antenna 150 can additionally or alternatively poll RFID tagson items arranged across multiple shelves (e.g., stacked shelves). Forexample, each shelf can be of a polymer, a fibrous composite, or another non-metallic and/or non-conducting material such that anelectromagnetic power signal can be broadcast from the radio antenna 150to the RFID tags on multiple shelves and such that data signals can betransmitted from the multiple RFID tags—through various shelves—back tothe radio antenna 150.

In various use scenarios, a patron can remove an item from the vendingmachine 102 and consume the item, use the item, and/or dispense of theitem packaging (including a corresponding RFID tag), etc. near thekiosk. Thus, the RFID reader 160 can poll local RFID tags through theradio antenna 150 at various (e.g., increasing) power levels, such asshown in FIGS. 2 and 3, and the processor 170 can estimate positions ofitems relative to the vending machine 102 based on radio antenna powerlevels required to receive a return signal from the corresponding RFIDtags. In one example, the processor 170 cooperates with the RFID reader160 and the radio antenna 150 to step up a power output of the radioantenna 150 and to correlate a minimum power level necessary to receivea returned signal from a particular RFID tag with a distance (or rangeof distances) between the radio antenna 150 and the particular RFID tag.In this example, the processor 170 can leverage a known dimension (e.g.,depth, width, and/or height) of the vending machine 102, a state of thedoor, and/or an electromagnetic transparency of the door or kiosk case,etc. to determine if a particular item is currently within the vendingmachine 102 (e.g., on a shelf within the vending machine 102) or outsidethe vending machine 102 based on a requisite output power from the radioantenna 150 to receive a signal from the corresponding RFID tag.

In another example, the processor 170 compares a current radio antennaoutput power necessary to receive a signal from the particular RFID tagwith a past RFID output power necessary to receive a signal from theparticular RFID tag, correlates a minimal increase in requisite powerwith rearrangement of the item within the vending machine 102, andcorrelates a substantial increase in requisite power (e.g., greater thana absolute or proportional threshold increase in power) with removal ofthe respective item from the vending machine 102. The processor 170 canadditionally or alternatively correlate requisite radio antenna outputpower to receive a signal from the RFID tag with arrangement of thecorresponding item on a particular shelf and/or at a particular(estimated) distance from the radio antenna 150 within the vendingmachine 102.

Alternatively, the RFID reader 160 can collect a signal strength ofreturned communications from each RFID tag during a polling session, andthe processor 170 can correlate each recorded signal strength with adistance of the corresponding item from the radio antenna 150. Thus, theprocessor 170 can cooperate with the radio antenna 150 and the RFIDreader 160 to estimate positions of various items within the vendingmachine 102.

In one alternative configuration, the radio antenna 150 is arranged onthe kiosk along a door jam such that, when the door is closed, the doorblocks wireless communication between the radio antenna 150 and RFIDtags on items stocked in the vending machine 102. However, in thisconfiguration, when the door is opened, the radio antenna 150 can scannearby RFID tags, and the RFID reader 160 and the processor 170 can readand analyze signals received through the radio antenna iso,respectively, to take inventory of items stocked within the vendingmachine 102. Thus, the processor 170 and the RFID reader 160 can pollRFID tags within the kiosk just at the door is opened and again justbefore the door closes. Alternatively, the processor 170 and the RFIDreader 160 can poll RFID tags that move passed the door (i.e., as thecorresponding products are removed from the vending machine 102).

In the foregoing implementations and configurations, once the doorcloses (i.e., shifts from open to closed) during a transaction with acustomer, the processor 170 can update an inventory ledger and bill thepatron based on a change in detected inventory between when the door wasfirst opened and when the door was closed. However, the radio antenna150 and the RFID reader 160 can function in any other way to collectidentification information from one or more RFID tags arranged oncorresponding items on one or more shelves within the vending machine102 and/or outside but proximal the vending machine 102.

In the configuration described above in which the housing 120 is mountedon the door of the kiosk and the radio antenna 150 is arranged insidethe kiosk, the radio antenna 150 can be electrically coupled to the RFIDreader 160 via a cable routed through a frame of the door—such as fromadjacent a door hinge—to the housing 120. In this implementation, thecable can include a coaxial line that communicates power to the radioantenna 150 to power RFID tags nearby and that communicates analogsignals received from the RFID tags at the radio antenna 150 back to theRFID reader 160. The cable can further include a main power line thatcommunicates power to the housing 120 to run the processor 170, thepayment collection module 140, a wireless communication module 142,and/or the RFID reader 160, etc. within the housing 120. For example,the main power line can source power from a stock wall power line (e.g.,120 VAC) or a regulated power line (e.g., 20 VDC) within the kioskand/or a backup battery arranged in the kiosk. However, the cable caninclude any other power or data line that communicates signals betweencomponents within the kiosk and components of the vending kit 100arranged within the housing 120.

In one implementation, the housing 120 mounts the RFID reader 160against a surface of the kiosk to conduct heat out of the RFID reader160 and into the kiosk, thereby cooling the RFID reader 160. In oneexample, the housing 120 is installed over the outer surface of thedoor—such as at an upper corner of the door opposite a hinge—and thehousing 120 can bind a heatsink surface of the RFID reader 160 against acasing of the door and/or against the door glass such that heat isconducted from the RFID reader 160 into the door. In this example, theRFID reader 160 mount to a conductive (e.g., copper) plate, and theconductive plate can be clamped, pressed, and/or adhered to an exteriorsurface of a glass section of the door to improve heat transfer betweenthe RFID reader 160 and the door. In another example, the housing 120mounts to the case of kiosk and bind a surface of the RFID reader 160 tothe kiosk case to sink heat from the RFID reader 160 into the kioskcase. Yet alternatively, a surface of the RFID reader 160 can mate tothe housing 120, and the housing 120 can conduct thermal energy from theRFID reader 160 into (a frame of) the door, into the kiosk case, or intothe ambient environment. The vending kit 100 can also include a heatpipe, an active cooling system, and/or a graphene sheet or memberthrough which thermal energy is conducted out of the RFID reader 160.

However, the vending kit 100 can include any other number of RFIDreaders and radio antennas, and the RFID reader(s) radio antenna(a), andthe processor 170 can cooperate in any other way to poll and identifyRFID tags arranged within the vending machine 102. The vending kit canadditionally or alternatively include one or more RFID reader antennasthat similarly function to power and then read signals received fromradio frequency identification tags within the vending machine 102.

8. Additional Sensors

One variation of the kiosk includes an optical sensor (e.g., a camera)arranged inside the kiosk and configured to image a portion of a shelfsupporting items. In this variation, the processor 170 can implementmachine vision and/or machine learning techniques to identify itemsplaced on the shelf, rearrangement of items placed on the shelf, and/orremoval of items from the shelf. The processor 170 can thus cooperatewith one or more optical sensors within the vending machine 102 toinventory stocked items in addition to or as an alternative to detectionwith the radio antenna 150 and the RFID reader 160. The processor 170can additionally or alternatively store images—such as in memory on inthe housing 120 or on a remote server—to maintain an archive of itemssold through the vending machine 102 over time.

As shown in FIG. 1, one variation of the vending kit 100 furtherincludes a scale 190 coupled to the shelf to detect a (total) weight ofitems placed on the shelf. For example, the scale 190 can include astrain gauge, an electronic balance scale, load cell, or a spring scale.In this variation, the processor 170 can compare outputs of the scale190 before and after a transaction to verify that one or more productswere removed from the shelf. Additionally or alternatively, theprocessor 170 can compare outputs of the scale 190 before and after atransaction to determine an amount of product removed from the shelf.For example, the processor 170 can cooperate with the radio antenna 150to detect selection of a cold ham sandwich from the shelf. In thisexample, the patron can apply mustard from a mustard bottle—stored onanother shelf within the vending machine 102—to the sandwich during thetransaction, and the processor 170 can cooperate with the scale 190 todetermine an amount of mustard that the patron applied to the sandwich.By applying RFID broadcast power and/or RFID return signal power asdescribed above, the processor 170 can also determine that the patronselected the mustard bottle rather than an adjacent mayonnaise bottleand thus assign the change of weight of the second shelf to a change ofweight of the mustard bottle—and therefore a change in volume of mustardin the mustard bottle. In this example, the processor 170 can trackconsumption of mustard from the mustard bottle over time based onreduction in sensed weight on the second shelf over time. Therefore, asin this example, the processor 170 can cooperate with the radio antenna150, the RFID reader 160, the scale 190, and/or an optical sensor todetermine both what item and how much of the item has been added to orremoved from the vending machine 102. In another example in which freshfruits are placed in the kiosk without applied RFID tags, the processor170 can cooperate with the scale 190 to sense removal of a piece offruit from the vending machine 102 independent of the RFID reader 160.However, the processor 170 can cooperate with one or more scales inaddition to or as an alternative to the RFID reader 160, the radioantenna iso, and/or the optical sensor to detect the addition or removalof items to or from the vending machine 102.

The vending kit 100 can also include a temperature sensor arrangedwithin the vending machine 102 to measure ambient temperature therein.The processor 170 can thus monitor the temperature of the environmentwithin the vending machine 102 and transmit an alarm or notification toa vending machine manager to repair the vending machine 102 and/or toreplace spoiled food items within the vending machine 102 if thedetected vending machine temperature rises above a threshold temperaturebeyond a threshold period of time. The processor 170 can similarlymonitor other functions of the vending machine 102 and transmit alarmsor notifications to a vending machine manager if a malfunction isdetected.

The vending kit 100 can further include a proximity sensor, and theprocessor can sample an output from the proximity sensor to determinethat a potential patron is near the vending machine 102. When apotential patron is detected nearby, the processor can wake the displayor otherwise respond to the patron.

9. Display

As shown in FIG. 1, one variation of the vending kit 100 includes adisplay arranged within the housing 120 and configured to displaypricing information for products within the kiosk. Generally, thedisplay 130 functions to render a user interface to guide a patronthrough a transaction at the vending machine 102. For example, thedisplay 130 can default to rendering an instruction reciting “touchscreen to begin” (e.g., for the display 130 that is a touchscreen) or“swipe credit card to begin.” Thus, as the patron performs subsequentsteps of a transaction, from providing a cashless payment mechanism toopening the door, selecting one or more items, and finally closing thedoor, the display 130 can render instructions for subsequent steps ofthe transaction.

The display 130 can also display pricing, nutrition, ingredient, sourceor supplier, allergy, and/or information for one or more items stockedwithin he vending machine 102, such as before or during a transaction.Furthermore, once the patron has made a selection from the vendingmachine 102 and closed the door, the processor 170 can calculate a totalcost, total a nutritional value (e.g., calories, fat, ingredients), oraggregate another quantitative value of the patron's selection, and thedisplay 130 can similarly render any one or more of these data. However,the display 130 can present any other useful or relevant information toa patron during a transaction. Pricing information for the productsloaded into the kiosk can also be printed on product packaging and/or onlabels applied to the products or product packaging.

10. Payment Collection Module

In the foregoing variation, the vending kit 100 can also include apayment collection module coupled to the housing 120, as shown inFIG. 1. Generally, the payment collection module 140 functions tocollect, receive, authorize, and/or authenticate a payment methodselected or entered by a patron to pay for an upcoming selection ofitems from the vending machine 102.

In one implementation, the payment collection module 140 includes amagnetic stripe reader that reads a magnetic stripe of a plastic card,such as a credit card, a debit card, or a plastic gift card. Forexample, the processor 170 can be coupled to a credit card reader via a⅛″ phone jack or via a USB port to collect credit card, debit card, orother plastic-type payment information from a patron. The paymentcollection module 140 can additionally or alternatively include aforward-facing camera, such as within the housing 120 adjacent thedisplay 130, and the camera 192 can capture an image of a credit card, adebit card, a ID card or badge (e.g., a hospital ID card or an employeeID badge), or an other payment or identification method held before thecamera 192, and the processor 170 can implement machine vision (e.g.,optical character recognition) to extract relevant payment informationfrom the image received from the camera 192. The camera 192 cansimilarly capture an image of a patron, and the processor 170 canimplement facial recognition to identify the patron, automaticallyaccess a payment account linked to the patron, and bill the patronthrough the payment account based on the patron's product selection fromthe vending machine 102.

Alternatively, the processor 170 can maintain an inventory ledger of thecontents of the kiosk and update the inventory ledger in response to aremoved item and check items out to users as removed from the kiosk. Inone example, the processor 170 can maintain an inventory ledger ofcontents of a janitorial closet “check-out” cleaning supplies forvarious janitors, and identify returns of cleaning supplies at the endof each janitorial shift.

11. Wireless Communication Module

As shown in FIG. 1, one variation of the vending kit 100 can thereforealso include a wireless communication module 142.

In one implementation, the wireless communication module 142communicates with a remote database, such as over Wi-Fi or cellularcommunication protocol. In this implementation, the payment collectionmodule 140 can communicate with a computer network via the wirelesscommunication module 142 to authenticate a transaction with a plasticcard swiped by a patron. Once the transaction with the plastic card isauthenticated, the processor 170 can trigger the locking mechanism 112to unlock the door. Once the door is opened and then returned to closed,the processor 170 can trigger the locking mechanism 112 to lock the doorand then poll the remaining RFID tags within the vending machine 102—viathe RFID reader 160 and the radio antenna 150—and compares a previousinventory with the latest inventory to identify items selected by thepatron. The processor 170 can then retrieve a price for each of theselected items—such as from data coded into each RFID tagged, from datastored locally in memory in the vending machine 102, or from datareceived from a remote database—sum the current prices for the selecteditems, and bill the authenticated payment mechanism accordingly. Forexample, the processor 170 can cooperate with the wireless communicationmodule 142 to access a remote database of RFID serial numbers andrelated product details, and the processor 170 can pass a disjoint of aprevious set of RFID tag serial numbers and a current set of RFID tagserial numbers to the remote database to collect corresponding real-timeprices for the items selected by the patron. Alternatively, theprocessor 170 cooperates with the wireless communication module 142 totransmit payment and inventory data to the remote server, including aninitial inventory and a final inventory for a current transaction, andthe remote server can determine which items were removed from thevending machine 102 and bill the patron accordingly through the suppliedpayment. The processor 170 can thus cooperate with a remote server orcomputer network to identify items removed from the vending machine 102and to bill the patron accordingly.

In this implementation, the processor 170 can cooperate with thewireless communication module 142 to transmit (e.g., push) triggers ornotifications to restock one or more items into the vending machine 102to associated vendors, such as in response to a vending machine 102inventory dropping below a general or item type-specific threshold. Forexample, the processor 170 can interface with the wireless communicationmodule 142 to transmit a restocking request to a particular vendor basedon a final inventory in the vending machine 102 after completion of atransaction.

In another implementation, the wireless communication module 142identifies a mobile computing device proximal the vending machine 102,and the processor 170 can communicate with the mobile computing devicethrough the payment collection module 140 to authenticate a cashlesspayment mechanism associated with the mobile computing device. Once thetransaction is complete, the processor 170 can then transmit a receiptfor payment to the mobile computing device through the short-rangewireless communication module 142. For example, the wirelesscommunication module 142 can transmit the digital receipt (and/orproduct pricing information, payment information, nutritionalinformation, etc.) directly to the mobile computing device, such as overshort-range wireless communication protocol (e.g., Bluetooth), or thewireless communication module 142 can transmit the digital receipt(and/or other transaction-related information.) to a computernetwork—such as over cellular or Wi-Fi communication protocol—and thecomputer network can route the receipt (and other information) to themobile computing device, such as over a cellular network.

In a similar implementation, the wireless communication module 142transmits foodstuff data to a mobile computing device proximal thevending machine 102 for presentation to a patron. Generally, in thisimplementation, the vending kit 100 leverages an interface on a patron'smobile computing device (e.g., a smartphone, a tablet) near the vendingmachine 102 to visually guide the patron through a transaction, todisplay inventory and foodstuff information, to collect paymentinformation, and/or to complete the transaction by transmitting visualtransaction-related data to—and receiving patron selection inputinto—the mobile computing device via the wireless communication module142. For example, the wireless communication module 142 can transmittransaction instructions, pricing, nutritional, and/or ingredientinformation for foodstuffs stocked in the vending machine 102 to thepatron's smartphone (or tablet), and the smartphone can execute a nativevending transaction application to render these data on the display 130within the smartphone, thereby guiding the user through the transactionwith the vending machine 102. In this example, the wirelesscommunication module 142 can then receive a cashless payment mechanismselection (e.g., for a stored credit card, an electronic paymentplatform, or a gift card) made by the patron through the native vendingapplication on the smartphone, the wireless communication module 142 cantransmit a receipt for one or more foodstuffs selected from the vendingmachine 102 by the patron back to the smartphone, and the native vendingapplication can display the receipt for the patron, thereby indicatingcompletion of the transaction.

Thus, in this and the foregoing implementations, the wirelesscommunication module 142 can communicate with the patron's mobilecomputing device via short-range wireless communication protocol, suchas near-field communication (NFC) or Bluetooth, or any other suitabletype of wireless communication.

12. Processor

The processor 170 of the vending kit 100 can be arranged within thehousing 120 and records an initial inventory of products within thekiosk based on signals read by the radio frequency identification reader160, to authenticate a cashless payment mechanism received at thepayment collection module 140, to trigger the locking mechanism 112 tounlock the door in response to authentication of the cashless paymentmechanism, to record a final inventory of products within the kioskbased on signals read by the radio frequency identification reader 160in response to closure of the door detected at the door sensor 110, andto initiate a payment with the cashless payment mechanism for adifference between the initial inventory and the final inventory. Thus,when the vending kit 100 is in operation, the processor 170 can recordan initial inventory of products within the kiosk based on signals readby the radio frequency identification reader 160, initiate—through thewireless communication module 142—a transaction with a cashless paymentmechanism associated with the mobile computing device, trigger thelocking mechanism 112 unlock the locking mechanism 112 in response toinitiation of the transaction, record a final inventory of productswithin the kiosk based on signals read by the radio frequencyidentification reader 160 in response to closure of the door detected atthe door sensor 110, and initiate a payment with the cashless paymentmechanism for a difference between the initial inventory and the finalinventory. Generally, the processor 170 cooperates with the lockingmechanism 112 to control access to items stocked it the vending machine102, cooperates with the RFID reader 160 and the radio antenna 150 (andthe scale 190, and the optical sensor) to identify removal of an one ormore items from the vending machine 102, and cooperates with the doorsensor 110, the payment collection module 140, and/or the wirelesscommunication module 142 to electronically bill a patron for the removeditems in response to detected closure of the door.

In one example implementation shown in FIGS. 3 and 4, the processor 170executes the following to complete a transaction with a patron: With thelocking mechanism 112 in a locked state, the processor 170 takes initialinventory of the vending machine 102 by polling the RFID reader 160 andthe radio antenna 150 and identifying items stocked in the vendingmachine 102 by matching received codes with RFID tag data stored locallyand/or on a remote database. When recording the initial vending machine102 inventory, the processor 170 can also read an output of the scale190 to determine a weight of contents in the vending machine 102, suchas on particular shelves within the vending machine 102. For example,this initial inventory recorded by the processor 170 can coincide with afinal inventory recorded during a preceding transaction completed at thevending machine 102. Alternatively, the initial inventory can berecorded by the processor 170 at a regular interval (e.g., every fiveminutes) or when a patron initiates a transaction (e.g., by touching thedisplay 130 or presenting a cashless payment mechanism). When a patronthen approaches the vending machine 102 to make a transaction, thedisplay 130 prompts the patron to enter a cashless payment mechanism,the payment collection module 140 receives a cashless payment mechanismentered by the patron, and processor validates (e.g., authenticates,authorizes) the cashless payment mechanism associated with the patron.For example and as described above, the processor 170 can cooperate withthe payment collection module 140 to receive credit card data swiped bythe patron, to access an electronic payment account with a username andpassword entered by the patron, or to implement facial recognitiontechniques to identify the patron adjacent the vending machine 102 andthen access a corresponding electronic payment account. Once a validpayment mechanism (e.g., a payment account) is identified and theinitial inventory is recorded, the processor 170 triggers the lockingmechanism 112 to unlock the door.

In the foregoing example implementation, the patron opens the door tocollect his desired item(s). Once his selection is complete, the patroncloses the door, which is sensed by the door sensor no and prompts theprocessor 170 to trigger the locking mechanism 112 to again lock thedoor. Alternatively, once the payment method is authenticated and thetransaction initiated, the processor 170 can trigger the lockingmechanism 112 to unlock the door for a preset period of time, such asfive seconds. After this period of time expires, the processor 170 cantrigger the locking mechanism 112 to again enter a lock state such that,when patron closes the door, the locking mechanism 112 retains the doorclosed, and the door sensor 110 can confirm that the door is closed andlocked. Similarly, once the payment method is authenticated and thetransaction initiated, the processor 170 can trigger the lockingmechanism 112 to unlock the door. Once an accelerometer, positionsensor, or other sensor coupled to the door or to the casing of thevending machine 102 detects that the door has moved (i.e., opened), theprocessor 170 can trigger the locking mechanism 112 to again enter thelock state such that, when patron closes the door, the locking mechanism112 retains the door closed.

The processor 170 then polls the RFID reader 160 and the radio antenna150 (and the weight sensor, and the optical sensor) to record a new(i.e., final) inventory in the vending machine 102. The processor 170identifies what items and/or how much of one or more items were removedfrom the vending machine 102 by comparing the initial inventory with thenew inventory. The processor 170 thus polls relevant sensors in thevending machine 102 to identify a transaction basket defined by adifference between the initial and final vending machine 102 inventoriesand then accesses a local or remote database of current prices for itemsin the transaction basket. For example, the processor 170 can calculatea disjoint of the set of RFID tag serial numbers in the initialinventory and the set of RFID tag serial numbers in the final inventory,transmit this disjoint set of RFID tag serial numbers to a remotedatabase via the wireless communication module 142, and receive a set ofreal-time prices for the items in the transaction bucket. The processor170 tallies the cost of the items selected by the patron and finallyinitiates a payment from the cashless payment mechanism for thetransaction bucket. For example, the processor 170 can cooperate withthe wireless communication module 142 to transmit a receipt for thetransaction to a remote server that handles credit card payments betweenthe patron's credit card account and a holding account associated withthe vending machine 102. In another example, the processor 170 cancommunicate with the remote server indirectly, such as by routingpayment details to the remote server through the patron's mobilecomputing device (e.g., smartphone, tablet). As described above, theprocessor 170 can also transmit transaction data, such as total cost, alist of selected items, or total selection nutrition content, to themobile computing device for presentation to the patron.

The processor 170 can additionally or alternatively poll relevantsensors while the door is open, determine what items have been removedfrom a shelf in the vending machine 102, and populate the transactionbasket in real time. The processor 170 can also update the display 130with a list of items in the transaction basket, an itemized cost of theselection(s), and/or a total cost of the patron's selection. Theprocessor 170 can also track item purchases by the patron over time,including what the patron purchases, when a patron purchases particularitems from the vending machine 102, what items the patron purchasestogether or separately, how the patron prepares a certain item (e.g., byadding mustard on a ham sandwich and mayonnaise on a tomato sandwich),etc. The processor 170 can store such patron information locally and/ortransmit these patron data to a remote server.

The processor 170 can thus cooperate with various components of thevending kit 100 (and the kiosk) to execute method S100 described below.However, the processor 170 can function in any other way to controlaccess to items within the vending machine 102 and to complete atransaction with a patron.

13. Battery

As shown in FIG. 1, one variation of the vending kit 100 includes abackup battery 180. Generally, the backup battery 180 can function tosupply power to various components of the vending kit 100—such as thelocking mechanism 112, the processor 170, and the wireless communicationmodule 142—during a power outage at the vending machine 102. Forexample, in response to a loss of wall power (e.g., 120 VAC) to thevending machine 102, the processor 170 can source power from the backupbattery 180 and transmit details of a current inventory of items (e.g.,foodstuffs) within the vending machine 102 to the computer network viathe wireless communication module 142. In another example, the backupbattery 180 can supply power to the locking mechanism 112 during a poweroutage to secure the current inventory in the vending machine 102. Inthis example, the backup battery 180 can also power the wirelesscommunication module 142 and/or the display 130 such that an authorizeduser (e.g., a vending machine 102 serviceman or a vendor) can enter anunlock command into the vending machine 102 via the wirelesscommunication or via the display 130. In this example, the processor 170can handle the unlock command by triggering the locking mechanism 112 tounlock the door, thereby providing the user with access to items withinthe vending machine 102, such as to replace expired items or to removeitems for alternative storage (e.g., alternative refrigeration).Alternatively, for the vending machine 102 stocked with foodstuffs (orother items) not substantially susceptible to spoilage in higher (e.g.,room) or lower (e.g., subofreezing) temperatures, the backup battery 180can provide power to the processor 170 and other components of thevending machine 102 to maintain full vending operation of the vendingmachine 102. However, the backup battery 180 can function in any otherway to power one or more components of the vending kit 100 during apower outage or power shortage.

14. Installation Kit

One variation of the vending kit 100 further includes an installationkit to enable quick installation of the housing 120 and other componentsof the vending kit 100 onto a kiosk, such as in fewer than fifteenminutes. For example, the installation kit can include a jig to supportthe lock receiver adjacent the kiosk and in alignment with the lockingmechanism 112 during installation, such as during installation ofself-tapping sheet metal through the kiosk and the lock receiver orwhile an adhesive sets between the kiosk and an exterior surface of thekiosk. The jig can thus ensure proper alignment of the kiosk and thelocking mechanism 112 and the lock receiver such that, when theprocessor 170 of the kiosk triggers the locking mechanism 112 to lock,the locking mechanism 112 can drive a bolt into the lock receiver tolock the door in a closed position, as described above and shown in FIG.5A. However, the installation kit can function in any other way tosupport or aid installation of the vending kit 100 onto the kiosk.

15. Method

As described above, the vending kit 100 implements a method S100 forcontrolling access to products from a vending machine 102. As shown inFIGS. 3 and 4, method S100 can therefore include: locking a door of thevending machine 102 in Block Silo; recording an initial inventory ofproducts arranged within the vending machine 102 based on signalsreceived by a radio antenna arranged within the vending machine 102 andread by a radio frequency identification reader 160 in Block S120;initiating a transaction in response to receiving a cashless paymentmechanism from a patron in Block S130; unlocking the door in response toauthentication of the cashless payment mechanism in Block S140; inresponse to closure of the door, recording a final inventory of productswithin the vending machine 102 based on signals received by the radioantenna 150 and read by the radio frequency identification reader 160 inBlock S150; and initiating a payment with the cashless payment mechanismfor a difference between the initial inventory and the final inventoryto complete the transaction in Block S160.

Block Silo of method S100 recites locking a door of the vending machine102. Generally, Block S110 functions to maintain the vending machine 102in a locked state to secure items stored within until a new transactionis initiated with a valid payment mechanism supplied by a patron (oruntil a vendor unlocks the door to stock new items into the vendingmachine 102). Thus, once a first patron closes the door of the vendingmachine 102 after making an item selection, Block S110 (executed by theprocessor 170 can trigger the locking mechanism 112 to lock the door ofthe vending machine 102 until a second patron later approaches thevending machine 102 and furnishes a valid payment mechanism, such as byswiping a credit card or tapping an NFC-enabled smartphone on a NFCreader in the vending machine 102.

Block S120 of method S100 recites recording an initial inventory ofproducts arranged within the vending machine 102 based on signalsreceived by a radio antenna arranged within the vending machine 102 andread by a radio frequency identification reader 160. Generally, BlockS120 functions to inventory a stock of items in the vending machine 102before the door is unlocked for a new patron by polling RFID tags in thevending machine 102 with the RFID reader 160 and the radio antenna 150.In one implementation, Block S120 functions (like Block S150 describedbelow) to record a final inventory in the vending machine 102 after afirst patron closes the door during a first transaction, and Block S120stores this final inventory. In this example, when a second patron laterinitiates a new transaction, Block S120 sets the previous finalinventory as the initial inventory for the new transaction.Alternatively, once a patron supplies a cashless payment mechanism toinitiate a transaction, Block S120 can record the initial vendingmachine 102 inventory by polling RFID tags on stocked items just beforeBlock S140 unlocks the door. However, Block S120 can function in anyother way to record an initial inventory of items stocked in the vendingmachine 102 before a patron is provided access to the items.

Block S130 of method S100 recites initiating a transaction in responseto receiving a cashless payment mechanism from a patron. Generally,Block S130 functions to initiate a transaction with a patron, such as byreceiving, authorizing, authenticating, and/or validating a cashlesspayment mechanism supplied by or associated with the patron. In oneexample, Block S130 receives payment information from a credit cardswiped through a magnetic stripe reader coupled to (e.g., integratedinto) the vending machine 102 and interfaces with a remote paymentsserver to authenticate subsequent payment with the credit card. Inanother example, Block S130 detects a mobile computing device (e.g., asmartphone, a tablet) proximal the vending machine 102 and collects—fromthe mobile computing device—a cashless payment mechanism associated withthe mobile computing device. In this example, Block S130 can alsotransmit pricing data for items (e.g., foodstuffs) in the vendingmachine 102—such as based on the initial inventory recorded in BlockS120—to the mobile computing device for presentation to the patron.However, Block S130 can function in any other way to initiate atransaction with a patron and/or to validate a supplied paymentmechanism.

Block S140 of method S100 recites unlocking the door in response toauthentication of the cashless payment mechanism. Generally, Block S140functions to provide a patron with access to stocked items in thevending machine 102 by triggering the locking mechanism 112 to unlockthe door in response to validation of a transaction with the patron(e.g., in response to authentication of a cashless payment mechanism inBlock S130).

Block S150 of method S100 recites, in response to closure of the door,recording a final inventory of products within the vending machine 102based on signals received by the radio antenna 150 and read by the radiofrequency identification reader 160. Generally, Block S150 functions totrigger the locking mechanism 112 to again lock the door once the patronhas returned the door to the closed position (e.g., as detected by thedoor sensor 110) and then interfaces with the RFID reader 160 and theradio antenna 150 to record a final inventory of items in the vendingmachine 102. Alternatively, Block S150 can shift the locking mechanism112 into a lock state while the door is open during a transaction suchthat the locking mechanism 112 is armed to lock the door once the patronreturns the door to the closed position, and Block S150 can theninterface with the RFID reader 160 and the radio antenna 150 (or an RFIDantenna) to record the final inventory of items within the vendingmachine 102.

Block S160 of method S100 recites initiating a payment with the cashlesspayment mechanism for a difference between the initial inventory and thefinal inventory to complete the transaction. Generally, Block S160functions to identify items selected by the patron by comparing RFIDcodes recorded in the initial inventory and RFID codes recorded in thefinal inventory and then bills the patron for the selected items. Forexample, Block S160 can identify a particular product removed from thevending machine 102 by the patron based on a difference between theinitial inventory and the final inventory and then initiate a paymentfor the price of the particular product through the credit card suppliedby the patron. Block S160 can also transmit a receipt for thetransaction to the patron's mobile computing device, and a nativevending transaction application executing on the patron's mobilecomputing device can display (i.e., visually present) these transactiondata to the patron.

However, method S100 can function in any other way to control access toitems within a vending machine 102 and to bill a patron for selection ofone or more of the items.

The vending kit 100, vending machine 102, and related methods can beembodied and/or implemented at least in part as a machine configured toreceive a computer-readable medium storing computer-readableinstructions. The instructions can be executed by computer-executablecomponents integrated with the vehicle, scheduling kiosk(s), a remotescheduling server, hardware/firmware/software elements of a patroncomputer or mobile device, or any suitable combination thereof. Othersystems and methods of the invention can be embodied and/or implementedat least in part as a machine configured to receive a computer-readablemedium storing computer-readable instructions. The instructions can beexecuted by computer-executable components integrated bycomputer-executable components integrated with apparatuses and networksof the type described above. The computer-readable medium can be storedon any suitable computer readable media such as RAMs, ROMs, flashmemory, EEPROMs, optical devices (CD or DVD), hard drives, floppydrives, or any suitable device. The computer-executable component can bea processor but any suitable dedicated hardware device can(alternatively or additionally) execute the instructions.

As a person skilled in the art will recognize from the previous detaileddescription and from the figures and claims, modifications and changescan be made to the embodiments of the invention without departing fromthe scope of this invention as defined in the following claims.

We claim:
 1. A vending system for controlling access to products from avending machine, the vending system comprising: a locking mechanismarranged between a door of a kiosk and a casing of the kiosk; a doorsensor; a payment collection module; a radio antenna arranged within thekiosk and configured to broadcast an excitation signal toward radiofrequency identification tags arranged on products within the kiosk; aradio frequency identification reader arranged within the kioskconfigured to read identification signals received from radio frequencyidentification tags via the radio antenna; and a processor arrangedwithin the kiosk and configured: to record an initial inventory ofproducts within the kiosk based on signals received by the radiofrequency identification reader, to collect payment information from apatron through the payment collection module, to initiate a newtransaction at the kiosk in response to authentication of the paymentinformation, to trigger the locking mechanism to unlock the door inresponse to initialization of the new transaction, to record a finalinventory of products within the kiosk based on signals received by theradio frequency identification reader in response to opening of the doorfollowed by closure of the door, as detected by the door sensor, duringthe new transaction, and to initiate a payment for a difference betweenthe initial inventory and the final inventory via the paymentinformation to complete the new transactions; to estimate a firstposition of a first product on a first shelf within the kiosk prior tothe new transaction based on strength of a first signal received from afirst radio frequency identification tag, arranged on the first product,by the radio antenna; and to estimate a second position of the firstproduct on the first shelf within the kiosk upon conclusion of the newtransaction based on strength of a second signal received from the firstradio frequency identification tag by the radio antenna.
 2. The vendingsystem of claim 1, wherein the kiosk comprises a column ofvertically-offset open shelves arranged behind the door of the kiosk,wherein each shelf in the column of shelves is configured to accommodatea group of food products packaged in multiple unique form factors. 3.The vending system of claim 2: further comprising: a housing mounted tothe door of the kiosk; and a display arranged within the housing;wherein the radio frequency identification reader is arranged within thehousing; and wherein the radio antenna is arranged over a first shelf,in the column of shelves, and is electrically coupled to the radiofrequency identification reader via a cable passing from a body of thekiosk, through the door, to the housing.
 4. The vending system of claim3, wherein the housing is configured to conduct thermal energy from theradio frequency identification reader into a frame of the door.
 5. Thevending system of claim 3: wherein the radio antenna is configured toexcite radio frequency identification tags arranged on products placedon the first shelf; further comprising a second radio antenna arrangedover a second shelf in the column of shelves and configured to output anexcitation signal to excite radio frequency identification tags arrangedon products placed on the second shelf; and wherein the processor isconfigured to record the initial inventory of products within the kioskbased on signals received from the radio antenna and the second radioantenna by the radio frequency identification reader.
 6. The vendingsystem of claim 3, wherein the door lock, the door sensor, the radioantenna, and the housing comprise a vending kit configured forretrofitting onto an existing kiosk.
 7. The vending system of claim 6:wherein the housing comprises a replacement door for the kiosk; whereinthe locking mechanism comprises a lock bolt integrated into thereplacement door; wherein the door sensor is integrated into thereplacement door; and wherein the radio antenna comprises a dipoleantenna arranged along the frame of the replacement door.
 8. The vendingsystem of claim 2: further comprising a first radio frequencyidentification tag arranged on a first shelf, in the column of shelves,over a first region of the first shelf designated for a first producttype comprising a metallic packaging; and wherein the processor isfurther configured: to determine that a unit of the first product typeis in inventory in the kiosk and arranged over the first region of thefirst shelf in response to a scan of the first shelf by the radiofrequency identification reader that excludes a signal associated withthe first radio frequency identification; and to determine that a unitof the first product type has been removed from the first region of thefirst shelf in response to a scan of the first shelf by the radiofrequency identification reader that comprises a signal associated withthe first radio frequency identification tag.
 9. The vending system ofclaim 1: wherein the payment collection module comprises a wirelesscommunication module configured: to detect a mobile computing deviceproximal the kiosk; to download payment information from the mobilecomputing device; wherein the processor is further configured togenerate a digital receipt based on the difference between the initialinventory and the final inventory in response to conclusion of the newtransaction; and wherein the payment collection module is furtherconfigured to wirelessly transmit the digital receipt to the mobilecomputing device.
 10. The vending system of claim 9: wherein theprocessor is further configured to access product information andreal-time pricing data of products stocked in the kiosk based onidentification signals received from radio frequency identification tagsvia the radio antenna prior to the new transaction; and wherein thewireless communication module is further configured to transmit productinformation and real-time pricing data of products stocked in the kioskto the mobile computing device for visual review at the mobile computingdevice in response to initialization initiation of the new transaction.11. The vending system of claim 1: wherein the processor is furtherconfigured to access real-time pricing data of products stocked in thekiosk based on identification signals received from radio frequencyidentification tags via the radio antenna prior to the new transaction;and further comprising a display arranged on the kiosk and configured todisplay pricing information of products stocked within the kiosk duringthe new transaction.
 12. The vending system of claim 11: wherein theprocessor is further configured: to identify a set of products removedfrom the kiosk during the new transaction based on the differencebetween the initial inventory and the final inventory; to accessnutritional information for each product in the set of products based onidentities of products in the set of products; and to calculateaggregate nutritional information of the set of products; and whereinthe display is further configured to display the aggregate nutritionalinformation of the set of products in response to conclusion of the newtransaction.
 13. The vending system of claim 1, wherein the processor isconfigured: to detect the door in an open state, following triggering ofthe locking mechanism to unlock the door, at a first time based on afirst change in an output of the door sensor; to detect closure of thedoor, following opening of the door, based on a second change in anoutput of the door sensor at a second time succeeding the first time; totrigger the locking mechanism to lock the door in response to detectingclosure of the door at a third time succeeding the second time; totrigger the radio frequency identification reader to scan contents ofthe kiosk for remaining radio frequency identification tags in responseto the locking mechanism re-locking the door at a fourth time succeedingthe third time; and to record the final inventory of products within thekiosk based on signals received by the radio frequency identificationreader at a fifth time succeeding the fourth time.
 14. The vendingsystem of claim 1, wherein the processor is further configured: to storethe final inventory of products within the kiosk following completion ofthe new transaction at a first time; to collect a second payment methodfrom a second patron through the payment collection module at a secondtime; to initiate a next transaction at the kiosk in response toauthentication of the second payment method; to trigger the lockingmechanism to unlock the door in response to initialization of the nexttransaction; to record a second final inventory of products within thekiosk based on signals received by the radio frequency identificationreader in response to opening of the door followed by closure of thedoor, as detected by the door sensor, during the next transaction; andto initiate a payment for a difference between the final inventory andthe second final inventory via the second payment method to complete thenext transaction.
 15. The vending system of claim 1: further comprisinga first radio frequency identification tag configured: for arrangementacross a packaging of a first product stocked within the kiosk; to tearin response to separation of the first radio frequency identificationtag from the packaging of the first product; and to broadcast a firstunique identifier in response to receipt of an excitation signal;wherein the processor is configured to confirm placement of the firstproduct within the kiosk in response to receipt of the first uniqueidentifier at the radio frequency identification reader.
 16. A vendingsystem for controlling access to products from a vending machine, thevending system comprising: a locking mechanism arranged between a doorof a kiosk and a casing of the kiosk; a door sensor; a paymentcollection module; a radio antenna arranged within the kiosk andconfigured to broadcast an excitation signal toward radio frequencyidentification tags arranged on products within the kiosk; a radiofrequency identification reader arranged within the kiosk configured toread identification signals received from radio frequency identificationtags via the radio antenna; and a processor arranged within the kioskand configured: to record an initial inventory of products within thekiosk based on signals received by the radio frequency identificationreader; to collect payment information from a patron through the paymentcollection module; to initiate a new transaction at the kiosk inresponse to authentication of the payment information; to trigger thelocking mechanism to unlock the door in response to initialization ofthe new transaction; to record a final inventory of products within thekiosk based on signals received by the radio frequency identificationreader in response to opening of the door followed by closure of thedoor, as detected by the door sensor, during the new transaction; toinitiate a payment for a difference between the initial inventory andthe final inventory via the payment information to complete the newtransaction; to access real-time pricing data of products stocked in thekiosk based on identification signals received from radio frequencyidentification tags via the radio antenna prior to the new transaction;to identify a set of products removed from the kiosk during the newtransaction based on the difference between the initial inventory andthe final inventory; and to access nutritional information for eachproduct in the set of products based on identities of products in theset of products; and to calculate aggregate nutritional information ofthe set of products; and a display arranged on the kiosk and configuredto display pricing information of products stocked within the kioskduring the new transaction and the aggregate nutritional information ofthe set of products in response to conclusion of the new transaction.